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// SPDX-License-Identifier: Apache-2.0
/*
* Copyright (C) 2023 Konsulko Group
*/
#include <QDebug>
#include "RadioGrpcClient.h"
#include "RadioClient.h"
using grpc::Channel;
using grpc::ClientContext;
using grpc::ClientReader;
using grpc::Status;
using automotivegradelinux::Radio;
using automotivegradelinux::SetBandRequest;
using automotivegradelinux::SetBandResponse;
using automotivegradelinux::SetFrequencyRequest;
using automotivegradelinux::SetFrequencyResponse;
using automotivegradelinux::StartRequest;
using automotivegradelinux::StartResponse;
using automotivegradelinux::StopRequest;
using automotivegradelinux::StopResponse;
using automotivegradelinux::ScanStartRequest;
using automotivegradelinux::ScanStartResponse;
using automotivegradelinux::ScanStopRequest;
using automotivegradelinux::ScanStopResponse;
using automotivegradelinux::GetBandParametersRequest;
using automotivegradelinux::GetBandParametersResponse;
using automotivegradelinux::StatusRequest;
using automotivegradelinux::StatusResponse;
using automotivegradelinux::BandStatus;
using automotivegradelinux::FrequencyStatus;
using automotivegradelinux::PlayStatus;
using automotivegradelinux::ScanStatus;
// Enum values used
using automotivegradelinux::BAND_AM;
using automotivegradelinux::BAND_FM;
using automotivegradelinux::SCAN_DIRECTION_FORWARD;
using automotivegradelinux::SCAN_DIRECTION_BACKWARD;
void RadioStatusEventReader::GetStatusEvents()
{
ClientContext context;
StatusRequest request;
StatusResponse response;
std::unique_ptr<ClientReader<StatusResponse> > reader(stub_->GetStatusEvents(&context, request));
while (reader->Read(&response)) {
if (response.has_band()) {
BandStatus band_status = response.band();
unsigned int band;
if (band_status.band() == BAND_AM)
band = 0;
else if (band_status.band() == BAND_FM)
band = 1;
else
continue;
emit bandUpdate(band);
} else if (response.has_frequency()) {
FrequencyStatus frequency_status = response.frequency();
emit frequencyUpdate(frequency_status.frequency());
} else if (response.has_play()) {
PlayStatus play_status = response.play();
emit playingUpdate(play_status.playing());
} else if (response.has_scan()) {
ScanStatus scan_status = response.scan();
emit scanningUpdate(scan_status.station_found());
}
}
Status status = reader->Finish();
if (!status.ok()) {
qWarning() << "GetStatusEvents RPC failed";
}
emit finished();
}
RadioGrpcClient::RadioGrpcClient(QObject *parent) : QObject(parent)
{
stub_ = Radio::NewStub(grpc::CreateChannel("localhost:50053", grpc::InsecureChannelCredentials()));
// Create thread to read status events
RadioStatusEventReader *reader = new RadioStatusEventReader(stub_);
reader->moveToThread(&m_event_thread);
connect(&m_event_thread, &QThread::started, reader, &RadioStatusEventReader::GetStatusEvents);
connect(reader, &RadioStatusEventReader::finished, &m_event_thread, &QThread::quit);
// FIXME: Normally the thread finishing would be connected per the below
// to trigger cleaning up the object. That seems to trigger a crash
// for not entirely obvious reasons. It seems unrelated to the signal
// connection to AppLauncherClient, as not connecting does not prevent
// the crash; further investigation is required.
//connect(reader, &RadioStatusEventReader::finished, reader, &RadioStatusEventReader::deleteLater);
//connect(&m_event_thread, &QThread::finished, &m_event_thread, &QThread::deleteLater);
// To avoid having intermediary slot+signal's in this class, try
// casting parent to Radio and connect directly to its slot.
// Callers should set parent to ensure this works as required.
if (parent) {
RadioClient *radio = qobject_cast<RadioClient*>(parent);
if (radio) {
connect(reader,
&RadioStatusEventReader::bandUpdate,
radio,
&RadioClient::updateBand);
connect(reader,
&RadioStatusEventReader::frequencyUpdate,
radio,
&RadioClient::updateFrequency);
connect(reader,
&RadioStatusEventReader::playingUpdate,
radio,
&RadioClient::updatePlaying);
connect(reader,
&RadioStatusEventReader::scanningUpdate,
radio,
&RadioClient::updateScanning);
}
}
// Start status event handling
m_event_thread.start();
}
void RadioGrpcClient::SetBand(unsigned int band)
{
SetBandRequest request;
ClientContext context;
SetBandResponse response;
if (band)
request.set_band(BAND_FM);
else
request.set_band(BAND_AM);
Status status = stub_->SetBand(&context, request, &response);
}
void RadioGrpcClient::SetFrequency(unsigned int frequency)
{
SetFrequencyRequest request;
ClientContext context;
SetFrequencyResponse response;
request.set_frequency(frequency);
Status status = stub_->SetFrequency(&context, request, &response);
}
void RadioGrpcClient::Start()
{
StartRequest request;
ClientContext context;
StartResponse response;
Status status = stub_->Start(&context, request, &response);
}
void RadioGrpcClient::Stop()
{
StopRequest request;
ClientContext context;
StopResponse response;
Status status = stub_->Stop(&context, request, &response);
}
void RadioGrpcClient::ScanForward()
{
ScanStartRequest request;
ClientContext context;
ScanStartResponse response;
request.set_direction(SCAN_DIRECTION_FORWARD);
Status status = stub_->ScanStart(&context, request, &response);
}
void RadioGrpcClient::ScanBackward()
{
ScanStartRequest request;
ClientContext context;
ScanStartResponse response;
request.set_direction(SCAN_DIRECTION_BACKWARD);
Status status = stub_->ScanStart(&context, request, &response);
}
void RadioGrpcClient::ScanStop()
{
ScanStopRequest request;
ClientContext context;
ScanStopResponse response;
Status status = stub_->ScanStop(&context, request, &response);
}
void RadioGrpcClient::GetBandParameters(unsigned int band, unsigned int &min, unsigned int &max, unsigned int &step)
{
GetBandParametersRequest request;
ClientContext context;
GetBandParametersResponse response;
if (band)
request.set_band(BAND_FM);
else
request.set_band(BAND_AM);
Status status = stub_->GetBandParameters(&context, request, &response);
if (status.ok()) {
min = response.min();
max = response.max();
step = response.step();
}
}
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